Paving for earth-fill dams.



van L. CEURGH. PAVING FOB ERTH PILL DAMS.

APPLIGATOI FILED AUG-21`, 1913.

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omino s'rniins PATE oren-ion.

WILLIAM L. CHURCH, OF NEWTON, MASSACHUSETTS, ASSGNOR T AMBU'BSEN COMPANY, 03? BOSTON, MASSACHUSETTS, A CORPORATION OF NEW' JERSEY.

PAYING FOB, EARTH-FILL DAMS.

Speixication 0f Letters Patent.

Patented J une l?, libia.,

Application filed August 27, 1913. Serial No. 786,825.

T 0 all 4whom. it may concern.

Be it known that l, .,Vinnian L. CHURCH, citizen of the United States, and resident of Newton, in the county of Middlesex and State of Massachusetts, have invented new and useful Improvements in llaving` for Earth-F ill Dams, of which the following is a specification.

` thereon `and extending from crest to foot.

It has been found, even in the ease of reservoirs, that even a slight wave action on the joints between the sections of such paving washes outthc earth, thereby creating caverns in the face of the dam and greatly weakening the structure. Furthermore, because of the impractieability of erecting inclosing forms on the sloping upstream face of the, dani, it is impossible to use concrete having sudicient tluiditv to insure proper crystallization or setting, so that after such.

` 'face of the dam, of concrete blocks sepvarately east slop-wet on the river-bank,

or at some point convenient to the dam, and afterward plat-ed in position on the dam face, together with means for protecting the 'joints between the blocks and binding the whole into a substantially monolithic mass, and it involvesl alf-o other features of novelty hereiiiaifter'.more tnlly described and set tor-th in the appended claims.

One. embodiment ot my invention is illustrated in the drawings which accompany and torni a part ot this speeiiication; but it will tic understood that the particular construction therein shown majY be materially moditied without departing` from the prineiple of n'iy invention.

ln the drawings :---Fiure l is a transverse section of an earth-fill dam or reservoir; Fig'. Q is a longitudinal section taken on the line 2; Fig. 3 is a plan view of a concrete block employed in my improved paving; and Fig. l is a transverse section ot the block shown in Fig. 3.

In the particular drawings selected for more fully diselosin` my invention, l reprcsents a block of concrete or the like east, preferably, slop-wet that is, the mixture contains suilicient water to insure the thorough hydration oi the cement and the proper setting of the concrete. The block may conveniently be three tect square and four inches thick, and preferably it is reinforced with the wire mesh or other ioraininous member 2. The outer face and upright sides of the block are indented as shown at 3, so that grooves will be formed in the outer face of the pavingwhen the blocksare placed side by side, and preferably the indentation of the outer face ot' the block is on an angle as shown, so that such grooves, so .formed by i abutting' blocks, will be wider at the bottom than at the top, although this is not essential.

After the blocks have set, they are laid on the rip-stream Jace of the darn ll as shown in Fig. 'l and are provided with a coating of cement l0, such coating preferably being applied in the following manner: lleintorcing` rods 4 of any suitable construction are placed in the `grooves between abutting blocks and suitably spaced from the bottoms thereof.. Then wire mesh G, or other suitable retieulated reinforcingv material, is spread on the outer :tace of the blocks and slightly spaced therefronr by pieces ot stone or other suitable means. .The cement layer 10 is then apple'd, preterably by means ot' the cement lgun which forcibly projects cement against the blocks and fills the grooves and the space between the mesh (3 and the outer face of the blocks and also completely incloses the mesh, such tions, each containino` a number of blocks,

and the several sections separated by joints 9 produced in any convenient manner. l For oxnmpie, a. euitebie upright forro may he winced :it the outer edge :i oi o section, :mit then, after the cement loyer l0', which. luid up to the form, hos strip of paper or the like is pmeefi against said. edge of the section :mit the cement loyer i() of the ofijzv cent section is laid with its outer edge against said peper strip. When the cement lavoro 10.10 harden, ,fr Suitnhie expzmeiori 1. `Joint 5f Wilt he teit between the some, there by permitting the free ooiitrziotoo the cement-invero in eoid Weather :md their sub sequent expansion. ih hot weather Without producing cracks in the o rtoce, in order to protect the joints between two adjont sections and prevent the Washing out of the earth by the :tation of the Waves, I prefer to place o strip 7 of iexibio, yiehing; and

fntermessftiog motorini, such. tend, 'mbbeioid and the iike, in the bottom of each gi'oovo between adjacent Section5 and in suoli euse i". may empioy two reinforcing :rode Et, 8", eiightiy spaced' afhove said strip, one meh roei, oe 8, being embedded in me cement layer 10 and the other 8 in the ioyer 10. it will he unfior'stood of eouree, that two or more of theee tiezitoie stripe, which may be about oneeigzhtii of :in inch thiek, may be employed. Preferohiy the rode it, 8' tre siightiy en'miter in diameter 'than the rode t.

Throughout the claims empioy the vterm eoricrete as covering Cement mid the'like,

1. In an earth-1311 dem having :in in eiineti 11p-Stream foce, o paving for said 'face oomH prising cost concrete boeke and it coating of cement east on the outer ,fa-cer; of Suid blocks ond binding the whole into o, mio stontially monolithic mese.

2. In an earth-fili dom having en inclined 11p-stream face, a paving for said. :foce com prising (met concrete biocke arranged in Seo tions, eooh section Consisting of o piuraiity of said blocks mid heilig separated from ite contiguous sections by expansion joints.

In .rm earth-fill om having on lriolmed up-stream ocqpovio foroaid face coroprising (met concrete oaks arranged in sections, each section consisting of n, piu-- rolity o said blocks :md being separated from its contiguous sections by expansion joints, mid means for ,protectingI sai expansion joints from the action of the Water,

4. In im earth-fili dam having im' inclined. 11p-stream face, it paving for said face comprising cast concrete hiockeooo. having its opper edges indented, and, o coating of cement on the outer filmes of .said blot-iks, said coating of cement filling the vgroove@ .formed by the indentationsi between two abutting blooks.

5. In an earthiii uostreani face, o paving prisiiig osiet concrete Noelia,

dom. having mi inolined for sind foco oom oooh. hav/mg itt,

' hiver of yititiio r, wtiter-frosietiug motorini 'ro the. bottom. o

resisting material in the io attori ve` 4tho iiieieotzrtiom hetweeii te; hioeifs, and o roinfoi Ging rod ih, et i. grooves,

t1 `Hin. an ,eorthwtiii ritiro, hovii rip-Stream falen, a paving: for a prissing soot ooncrote bio is, euch hm c., upper edges indente'i, n, coating of M on the outer fzeos of uid hit said itilig of commit tilting the grooves former? y the B5 in dentotioms between two abutting invoke, o izqvtilr of formiiiziouo nmteriai oniiiedfieti in ooo g of cement, and o reinforcing rod irih .1 said grooves.

Iii im eorth d. iup-otrezmi tooo, o. "povi v for orisiiig oost concrete h im, eomont on the outer foce o 'Myer of omminoue im ri i. Totigtztijy' roA "'om the outor neee of suini Moeke :md oiiiorefitiedin sold coating of Cement;

In ou earth-#titi dum having im Moslim-:d iip-streomfaee, o lmving for sind ieee nouipr'isihg exist oon *rote bloeks arranged in seo tions, 'ouch sec ion eolitmiining o pturaity of Said hioolto amd boing separated from its com tiguous sections by expansion joints, the up per edges: of each iiioek being inented, and

i oooh groove ormed by tho ioeototion between the abutting bl'ks of odjfexeot sect-,imm

it, In. mi mirth-"fill dem having an ineiined upm exam time, a. povi r for said foe@ compri i ranged iii oet tous, each section eontaiuing :i piurziiity of said 'blocks :and being oelmw fitted from its contigiiooe sections: by ei; mw Sion joints, the upper et fes; of oooh liioeh being indented, a iayer o" yitaflding, womb bottom of each groove formeii by' the iiidentations ixtween the ihutting Moeke of adjacent sectione, und o i er of cement or: the outer face of erich seetiomeach of said loyers of cement filling a portion'o olie ot said grooves.

il. In an earth-lill dem hgving mi iwelined upfstrezam fade, :i paving for seid face comprising cast eonorete 'biorrko arrxmgod in sections, each section committing a plumiit; of said blocks and being eopomted from im contiguous seetions hy Munition joints. t opper eriges of each hioek loyer of yieitiirig, Water-r in tho bottom of each t ing um meti hy tht; f 1W 1g. cest eonorete 'locke .an im .in sntaozxsbetween tha abunvbcks of l subscribed my name this 26 day of Aug.,

vacant sscns, :L ayei 0f camail?, -o'n 'i'fn'el 1913. @may 'face si each sectol, each'n said lavefs ELL M H R' y of cament Eing a, poion of one ci' said W 'L' C U CH' grooves, and remfmrcms rod embeoled in v/"s/ltnesses:

,the sement neach of sa portions.

` Nus F. AMBURSEN, En tsas'mmfmy wlzmreo9 i n e hereunto AARON C. DANIELS. 

